If you live in a particularly humid environment, you might not think about all that moisture very often, but it can cause some serious damage to your cameras and lenses in the long-term. If you live in such an area, a dry cabinet can protect your gear, and this excellent video will show you both how they are used and why they are beneficial.
Coming to you from PIXEL VIILAGE, this great video will show you how use a dry cabinet and why they are so beneficial for certain climates. Essentially, a dry cabinet is a standard storage cabinet paired with a dehumidifier to keep the inside at a certain humidity. Nicer models will also often come with things like lighting. The entire purpose of reducing the humidity of your gear's storage environment is to prevent things like the growth of fungus, which can ruin lenses. You only need to hop on eBay and look at vintage lenses to see how many of them fall prey to fungus that affects image quality. If you do not live in a significantly humid environment, you probably do not need a dry cabinet, but if you live somewhere where the air is frequently saturated or near it, it is definitely worth considering one. Check out the video above for the full rundown.